[Correction] Flight Controls — Primary System Flight Control Computer — Modification
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Airbus A380-841 and A380-842 aircraft must modify each affected FCGU by installing the improved software standard within nine months from 24 September 2025. Alternatively, replacing the affected FCGU with one already containing the improved software is acceptable. Concurrent modifications per Airbus Service Bulletin A380-42-8035 are allowed if performed alongside this software update. Only improved or later approved FCGU software standards may be installed after modification.
Summary
EASA Airworthiness Directive 2025-0194 is a corrective directive addressing Airbus A380-841 and A380-842 aeroplanes equipped with Rolls-Royce RB211 Trent 900 engines. It mandates a modification to the primary flight control and guidance unit (FCGU) software to prevent uncommanded thrust reduction during soft go-around maneuvers. The directive applies to specific FCGU hardware and software part numbers identified in the document.
What changed
This directive re-issues the original AD to correct typographical errors in the part number references for the affected FCGU hardware. It requires installation of an improved FCGU software standard version P13.6H3 or P13.6H5, replacing earlier software versions that could cause erroneous thrust commands during flight. The modification is mandated within nine months of the effective date.
Why it matters
The directive addresses a critical safety issue where the primary flight control computer could command unintended thrust reduction during take-off and go-around phases, potentially reducing aircraft control. Compliance ensures continued airworthiness and prevents incidents related to engine thrust management on affected Airbus A380 aircraft. Operators and maintenance teams must update software to maintain regulatory compliance and flight safety.
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